When Do Puppies Really Stop Growing?

Puppies are the cutest little creatures ever to set foot on this planet. They are small, gentle, and loving. They are little things that you just can’t help but fall in love with. Because of this, we would wish they lived this way forever. But sadly, they do not. So, exactly, when do puppies stop growing?


The Myth

The Myth

It is commonly misconstrued that puppies stop growing once they reach the age of one. This is entirely false. This myth might have been conceptualized due to dog food companies recommending owners to only feed puppy dog food to their pets only up to one year. I’d like to say that they’re just giving us an estimate or average for all breeds of dogs.

So, when exactly do puppies stop growing?

On average, a puppy will stop growing at about 10 months to 18 months of age. During these months, you will notice how fast your puppy is growing - especially its paws (for large dogs, that is). You will also notice that your puppy’s appetite is increasing by the day.

Due to a large number of dogs in the world today that come in varied breeds, there is no exact answer for ‘when puppies stop growing’. Depending on the breed, the growth of a dog will vary. Aside from this, it will also vary in size. It is safe to say that all dogs do not grow at the same rate as other dogs. In general, smaller breeds will reach their full growth at a younger age than bigger breeds.

I will then group all breeds into different sizes, and it’s all up to you to determine when your pup stops growing:

Small Sized Breeds

​Smalls breeds like the Chihuahua or the Mini Pinscher reach their full size at about ten months to a year. After this, they do not grow anymore. So technically, they stay cute forever! Aren’t you glad to hear about that?

Small Medium Sized Breeds

Dogs that are about the size of small to medium like the Toy Poodles, Beagles, Shih Tzu and Miniature Schnauzers will stop growing when they reach the age of 12 to 15 months. Additionally, at the age of 18 months or 1 year and six months, they reach their full weight.

Medium Sized Breeds

Collies, Labrador Retrievers, Pitbulls, and Boxers, Huskies, among many others, would be considered as medium-sized dogs. At around 18 months, they have fully grown already. Also, they reach their full ideal weight at about two years of age.

Large Sized Breeds

Large dog breeds like the Doberman Pinscher or the Dalmatian takes a much slower period of its growth. The majority of these large puppies will not be able to reach their full-sized growth until they are about 15 to 18 months of age. They, then, reach their full weight at about two years old.

Giant Breeds

Giant dog breeds like the Great Dane or the Mastiff are the ones that take the longest to reach their full growth. They take 18 months until they reach their full size. You usually see the growth first in their paws (which are huge) and it may take up to 3 years to reach their full weight.

As said above, you usually see how big a puppy is going to become through their paws. It is an indicator of how big they are. When they are puppies, these giant dog breeds have humongous paws that look awkward and disproportional with their bodies. But, when they reach their full size, they will look natural already. So, don’t worry! Giant dog breeds, although they look awkward when they are puppies, still look adorable with those huge paws when they reach their full size!

​Although the explanations above will not give you the exact answer as to when our puppies will stop growing, they will at least give you a rough estimate.

What about mixed breeds?

There are many other factors wherein the growth of puppies may be different from what have been mentioned above. One of these factors is when we start to talk about mixed breed puppies. But actually, it is just the same. You simply determine what group your puppy belongs to. Is it of small, medium, or giant size? From there, you can get your estimate.


As a conclusion, there is no exact answer as to when a puppy stops growing. In case we can calculate the growth of a particular breed, still, we cannot speak for all the breeds. Just like us humans, dogs are all unique and beautiful in their own way. Therefore, they all have their own timeframe for their respective growths. The best advice I can give to all of you is to just be patient! Watch his growth carefully, and if you see that your pup hasn’t grown for quite a while, then that must indicate that he has reached his full size.

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